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(No Model.)

- J. F. LEONARD.

HOPPER FOR EMERY WHEELS.

No. 433,735. Patented Aug. 5, 1890.

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UNITED STATES PATENT OFFICE,

JAMES F. LEONARD, OF LINCOLN, ASSIGNOR TO MATTHEIV E. FARNES AND A. BRUCE MOMILLAN, BOTH 0F PAIVTUOKET, RHODE ISLAND.

HOPPER FOR EMERY-WHEEL.

SPECIFICATION forming part of Letters Patent No. 433,735, dated August 5,1890.

Application filed January 16, 1889. fierial No. 296,524. (No model.)

To aZZ whom it may concern:

Be it known that 1, JAMES F. LEONARD, a citizen of the United States, residing at Lincoln, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Hoppers for Covering Emery-Wheels, of which the following is a specification.

The object of my improvement is toprovide a hopper for holding emery, which will allow the emery to drop upon the prepared wheel, and to provide a roller in combination with the said hopper, which will smooth the emery as it falls upon the prepared surface. I accomplish this object by the means illustrated in the accompanying drawings, in which- Figure 1 is a perspective view in elevation of the machine. Fig. 2 is a top view of the hopper, showing the threaded bolt passing through the lower part thereof.

Similar letters refer to similar parts throughout.

In the drawings, A designates a suitable frame-work for the support of the hopper B. This hopper B is constructed of metal or other suitable material in a funnel of wedge shape,

the front wall thereof being disengaged and pivoted at g to the side walls, and firmly secured to the frame A by the bolts 12. Upon opposite side walls of the hopper B are arms 0, rigidly secured thereto by similar bolts 0'. To these arms are loosely pivoted the arms 0 (only one being shown in the drawings) by the pivots 0 being a slot and a set-screw. These swinging arms are constructed to eX- tend below the aperture of the funnel and terminate in suitable bearings for holding the shaft of an emery-wheel.

D designates one of two similar arms, loosely pivoted at d to opposite side walls of said hopper, terminating in suitablebearlugs for holding the shaft d of a metal roll E, which bears loosely in the same.

The emery-wheel F, constructed in the -manner well known to those skilled in the art of grinding cards, being properly prepared with a layer of thread wound thereon and a coating of glue, is then mounted in the bearings at the extremities of the arms 0.

In the lower part of the face of the hopper I preferably'place an aperture g, threaded to correspond with the threaded bolt 1), passing therethrough and engaging therewith. This bolt bears against the rear wall of the hopper, and when turned serves to swing the disengaged face in such a manner as to open the-aperture at the base of the funnel and allow the escape of the emery contained therein. hen the wheel F is in position, a crank K being attached to one end of the shaft thereof, the aperture of the funnel is opened sufficiently to allow the emery contained therein to drop upon the prepared surface of the wheel F, which is revolved by means of the crank or by power applied by means of a belt and pulleys. The roller E then rests upon the emery surface and as the wheel revolves smooths and adjusts the emery.

An emery surface is at present applied to wheels by hand, and it is a practicable impossibility to obtain such a smooth and equal surface by hand as by my mechanism. The wheel, when covered, grinds the cards far more evenly and allows the slats of the carder to be placed nearer together, thus securing far better results from carding.

What I claim and desire to secure is- 1. A machine for covering emery-wheels, consisting of a hopper for containing emery mounted upon a frame, said hopper having an aperture for the passage of the emery in the lower part thereof, arms for holding an emery-wheel in position beneath the aperture of the hopper, secured to the side walls of the hopper, and a roller E, mounted loosely in arms D, secured to said hopper by the pivot d and resting against the emery-wheel, all substantially as described.

2. In machines for covering emery-wheels, the hopper B for holding emery, mounted upon a frame A, the front wall thereof being disengaged and pivoted at 9, provided with a threaded aperture g in the lower part thereof, corresponding to the thread of a bolt b, passing therethrough and bearing against ings holding a roller E, all substantially as the rear wall, the arms 0, se cured to the sides described.

of said hopper, the arms 0 pivoted thereto 4 t and adjustable by means of the slot termi- JAMES LEONARD 5 nating in bearings to receive the shaft of an In pres ence of emery-Wheel, and the arms D, secured upon EDWARD W. BLODGETT,

the sides of said hopper, terminating in bear MATTHEW E. FARNES. 

